I got the exact same blank window after ZA finished installing.
Maybe this is linked to my thread "ZAPro No Alerts": http://forums.zonealarm.com/showthread.php?t=77862
The only other security software that I have running is AVG.
ZA support is no help.
vsmon version: 10.0.250.000
Driver version: 10.0.217.000
ZoneAlarm Browser Security: 1.5.322.0
ZoneAlarm ForceField Spyware Scanner: 18.104.22.168
ZoneAlarm ForceField Anti-Phishing Database: 22.214.171.124
ZoneAlarm ForceField Spyware Sites Database: 04.155